The principle is that additives such as alum coaxial Gu laen (Aluminum Sulfate) into waste water, particle, Colloid several bulk. Called flock (Floc) precipitate and could come down quickly.
It is the addition of coagulant, such as alum Dylan (Aluminum Sulfate) into water makes colloid particles are captured by a group called The Flock (Floc) and heavy and can settle down quickly.
The principle is to add substance, coagulant, such as alum (Aluminum Sulfate) into the wastewater to many colloidal particles held together. " Flock (Floc) until the weight and settling down quickly.